import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.Key;
import java.security.NoSuchAlgorithmException;
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import org.apache.commons.codec.binary.Base64;
import java.net.URLDecoder;
public class AESUtil {
public static String aesEncode(String str, String key) throws UnsupportedEncodingException, NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, InvalidAlgorithmParameterException, IllegalBlockSizeException, BadPaddingException {
String iv = key.substring(0, 16);
byte[] keyBytes = new byte[16];
byte[] b = key.getBytes("UTF-8");
int len = b.length;
if (len > keyBytes.length) {
len = keyBytes.length;
}
System.arraycopy(b, 0, keyBytes, 0, len);
SecretKeySpec keySpec = new SecretKeySpec(keyBytes, "AES");
Cipher c = Cipher.getInstance("AES/CBC/PKCS5Padding");
c.init(1, (Key)keySpec, new IvParameterSpec(iv.getBytes()));
byte[] encrypted = c.doFinal(str.getBytes("UTF-8"));
String enStr = new String(Base64.encodeBase64((byte[])encrypted));
return enStr;
}
public static String aesDecode(String str, String key) throws UnsupportedEncodingException, NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, InvalidAlgorithmParameterException, IllegalBlockSizeException, BadPaddingException {
String iv = key.substring(0, 16);
byte[] keyBytes = new byte[16];
byte[] b = key.getBytes("UTF-8");
int len = b.length;
if (len > keyBytes.length) {
len = keyBytes.length;
}
System.arraycopy(b, 0, keyBytes, 0, len);
SecretKeySpec keySpec = new SecretKeySpec(keyBytes, "AES");
Cipher c = Cipher.getInstance("AES/CBC/PKCS5Padding");
c.init(2, (Key)keySpec, new IvParameterSpec(iv.getBytes("UTF-8")));
byte[] byteStr = Base64.decodeBase64(str);
return new String(c.doFinal(byteStr), "UTF-8");
}
}
